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Na2S2O3

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1173684 · Space group: P1 (#1)

Basic Information

Formula
Na2S2O3
MP-ID
mp-1173684
Elements
3
Sites
21
Density
1.5479
g/cm³
Volume
508.85
ų
Cell a
7.7152
Å
Cell b
7.8178
Å
Cell c
9.4597
Å
α Angle
85.37
°
β Angle
83.10
°
γ Angle
64.00
°
Space Group
P1
Point Group
1
Crystal System
Triclinic
Bravais Lattice
Triclinic P
Stability
No
Packing Fraction
0.5240

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
9.42 9.3864 10.1 (0,0,1)
12.60 7.0231 100.0 (0,1,0)
12.82 6.9032 15.4 (1,0,0)
13.54 6.5389 22.1 (1,1,0)
15.20 5.8308 4.7 (1,0,1)
15.52 5.7101 8.8 (0,1,1)
15.57 5.6924 27.9 (1,1,1)
16.00 5.5403 30.8 (0,1,-1)
16.65 5.3257 7.6 (1,0,-1)
18.91 4.6932 3.8 (0,0,2)
21.61 4.1124 26.9 (1,-1,0)
21.96 4.0477 11.0 (1,1,2)
22.45 3.9601 1.1 (0,1,2)
22.91 3.8825 28.7 (1,2,0)
23.12 3.8466 2.9 (0,1,-2)
23.28 3.8216 23.6 (2,1,0)
23.28 3.8204 4.8 (1,-1,1)
23.92 3.7209 8.0 (1,0,-2)
23.95 3.7152 6.2 (1,-1,-1)
24.02 3.7048 5.0 (1,2,1)
24.05 3.7006 3.1 (2,1,1)
24.63 3.6146 2.4 (1,1,-2)
25.36 3.5115 8.4 (0,2,0)
25.59 3.4811 2.4 (1,2,-1)
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Energy Properties

Formation Energy/atom
-0.77968
eV/atom
Energy/atom
-4.46570
eV/atom
Energy above Hull
1.0858
eV/atom
Uncorrected Energy
-4.3967
eV/atom
Volume/atom
24.23
ų
c/a Ratio
-

Electronic Properties

Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
3.1095
μB
Mag. Ordering
FM
Mag. Sites
6
Magnetization/Volume
0.006110
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.429
Element Family
Metalloid-Nonmetal
Solute Fraction
0.571
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0790
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.9707
J/mol·K
Ω Parameter
0.0492
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
48.276%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
1.0413
smaller = more stable mixing
VEC
3.714
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-43.803
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9821
SS Former
0
Phase Tendency
AM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.190
Family
O-rich Multi-Component
Matrix Element
O · 0.429

Related Tasks

Related computation task IDs (2)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1173684
Reference Citation

The crystal structure and related material properties of Na2S2O3 were obtained from the Materials Project database (MP-ID: mp-1173684, database version v2026.04.13).

Literature Citation

Horton, M.K., Huck, P., Yang, R.X. et al. Accelerated data-driven materials science with the Materials Project. Nat. Mater. 24, 1522–1532 (2025). https://doi.org/10.1038/s41563-025-02272-0

BibTeX
@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# generated using pymatgen
data_Na2S2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.71515400
_cell_length_b   7.81779566
_cell_length_c   9.45968188
_cell_angle_alpha   85.36708148
_cell_angle_beta   83.09558453
_cell_angle_gamma   63.99947852
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2S2O3
_chemical_formula_sum   'Na6 S6 O9'
_cell_volume   508.84757741
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.80231300  0.93887800  0.21856900  1.0
  Na  Na1  1  0.50291200  0.08221500  0.87735600  1.0
  Na  Na2  1  0.84946600  0.35989400  0.80090600  1.0
  Na  Na3  1  0.87528300  0.32023700  0.23414500  1.0
  Na  Na4  1  0.24201000  0.00229200  0.63896900  1.0
  Na  Na5  1  0.30775800  0.98196600  0.25538400  1.0
  S  S6  1  0.65273900  0.67647900  0.33598800  1.0
  S  S7  1  0.05562000  0.99942800  0.95852300  1.0
  S  S8  1  0.98169200  0.99651400  0.43447600  1.0
  S  S9  1  0.77974000  0.64377100  0.52232300  1.0
  S  S10  1  0.58449900  0.70374900  0.69872500  1.0
  S  S11  1  0.88862500  0.00654900  0.64112600  1.0
  O  O12  1  0.24453200  0.44343800  0.17322400  1.0
  O  O13  1  0.50381200  0.27478700  0.15887200  1.0
  O  O14  1  0.83693300  0.10999400  0.94053400  1.0
  O  O15  1  0.25431900  0.27369000  0.48642400  1.0
  O  O16  1  0.16875700  0.33704300  0.14429400  1.0
  O  O17  1  0.49344500  0.11905400  0.12639500  1.0
  O  O18  1  0.42760200  0.16461100  0.51949300  1.0
  O  O19  1  0.06316600  0.02154900  0.11955000  1.0
  O  O20  1  0.15147700  0.12206600  0.87472400  1.0
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